90970133 has 4 divisors (see below), whose sum is σ = 90992160. Its totient is φ = 90948108.

The previous prime is 90970123. The next prime is 90970169. The reversal of 90970133 is 33107909.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90970133 - 2¹² = 90966037 is a prime.

It is a deceptive number, since it divides R_90970132.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90970133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90970123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2753 + ... + 13766.

It is an arithmetic number, because the mean of its divisors is an integer number (22748040).

Almost surely, 2^90970133 is an apocalyptic number.

90970133 is the 5507-th octagonal number.

It is an amenable number.

90970133 is a deficient number, since it is larger than the sum of its proper divisors (22027).

90970133 is a wasteful number, since it uses less digits than its factorization.

90970133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22026.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 90970133 is about 9537.8264295383. The cubic root of 90970133 is about 449.7449303455.

The spelling of 90970133 in words is "ninety million, nine hundred seventy thousand, one hundred thirty-three".